package com.example.project.common;

import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class CodeGenerator {

    private static final String url = "jdbc:mysql://localhost:3306/test?useUnicode=true&useSSL=false&characterEncoding=utf8";
    private static final String username = "root";
    private static final String password = "root";

    private static final String codeOutputDir = "/src/main/java";
    private static final String parentPackage = "com.example.project";
    private static final String modelName = "";
    private static final String mapperXmlOutputDir = "/src/main/resources/mapper";

    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + "：");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "！");
    }

    public static void main(String[] args) {
        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + codeOutputDir);
        gc.setAuthor("ss");
        gc.setOpen(false);
        //gc.setSwagger2(true); // 实体属性添加Swagger2注解
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setDriverName("com.mysql.jdbc.Driver");
        dsc.setUrl(url);
        dsc.setUsername(username);
        dsc.setPassword(password);
        //dsc.setSchemaName("public");
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(modelName);
        pc.setParent(parentPackage);
        pc.setEntity("model");
        mpg.setPackageInfo(pc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模板引擎是 velocity
        //String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 ， 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化！！
                return (projectPath + mapperXmlOutputDir + "/" + pc.getModuleName() + "/"
                        + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML).replace("//", "/");
            }
        });

        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定义输出模板
        // 指定自定义模板路径，注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
        //templateConfig.setEntity("templates/entity2.java");
        //templateConfig.setService();
        //templateConfig.setController();

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);
        //strategy.setSuperEntityClass("你自己的父类实体,没有就不用设置!");
        //strategy.setSuperEntityColumns("id"); //写于父类中的公共字段
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setControllerMappingHyphenStyle(true); //驼峰转连字符
        //strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");
        String tableName = scanner("请输入表名，多个英文逗号分隔？所有输入 all");
        if (!"all".equalsIgnoreCase(tableName)) {
            strategy.setInclude(tableName.split(","));
        }
        strategy.setTablePrefix(pc.getModuleName() + "_", "t_", "tb_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}
